EVALUATION OF STUFFING BOX FORCES ASSOCIATED WITH THE THERMAL EXPANSION OF e-PTFE AND GRAPHITE PACKING SETS

摘要

This paper evaluates the stuffing box forces associated with mechanical packing sets comprised of a combination of e-PTFE and Graphite materials. Utilizing a simulated stuffing box test device and protocol, radial and axial forces associated with thermal stresses are measured for different packing configurations. The testing varies the quantity and location of both e-PTFE and Graphite packing material within a five ring packing set. Test results are reported with comparative data and correlations among the configurations.